Merge branch 'FunctionCalls' into DontBreakDev

tests/sprint4/test/sp4_cg_demo.alpha

@@ -0,0 +1,8 @@
+type main: string -> integer
+function entry: main
+
+entry(arg) := {
+	  [integer:x]
+ 	  x := 3 + 2 * 8;
+	  return x;
+ }

tests/sprint4/test/sp4_cg_demo.alpha~

@@ -0,0 +1,8 @@
+type main: string -> integer
+function entry: main
+
+entry(arg) := {
+	  [integer:x]
+ 	  x := 3 + 2 * 8;
+	  return 0;
+ }

tests/sprint4/test/sp4_cg_demo.cg

@@ -0,0 +1,9 @@
+type main: string -> integer
+function entry: main
+
+entry(arg) := {
+	  [integer:x; Boolean b]
+ 	  x := 3 + 2 * 8;
+	  b := x < 1;
+	  return 0;
+ }